Chesterton 4400 Double Concentric Gas Mechanical Seal

1in to 3.375in / 25mm to 60mm shaft sizes, in-gland control system eliminates the need of an external gas panel, oversized seal chamber option available.

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Effective April 15th, 2025 Chesterton has added a 3% surcharge for all of their products. The surcharge will appear as a separate line item on the order.

Highlights...

Features

  • Shaft sizes:
    • 1in to 3.375in
    • 25mm to 60mm
  • -67 to 570˚F (-55 to 300˚C) operating temperature
  • Vacuum to 300psig (20barg) process pressure
  • Up to 5000 RPM operating speed
  • 316 Stainless Steel hardware
  • Alloy C-276 springs
  • Face materials:
    • Carbon Graphite, Resin Impregnated
    • Silicon Carbide, Sintered Pressureless
  • Elastomer materials:
    • Ethylene Propylene (EP)
    • Tetrafluoroethylene-Propylene (FEPM)
    • Fluorocarbon (FKM)
    • ChemLast 550 (FFKM)
  • ISO-3069C, ASME B73.1, ASME B73.2

The Chesterton 4400 Double Concentric Gas Mechanical Seal is a unique design that provides the benefits of gas seal technology while enhancing sealing reliability, reducing gas consumption requirements, and accommodating gas supply disruptions that are common during gas seal operation.

The 4400 has been designed to fit popular process equipment including ANSI and API process pumps, top entry mixers, blowers, and compressors without equipment modification.